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Published bySteven Cole Modified over 9 years ago
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1 Math Review: mean, median, mode, range
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2 Average Number of Emails x x x x x x x___x___x_____x__________ 1 2 3 4 5 6 Emails sent today What is the average number of emails sent today? Remember to find the average : ADD and Divide What is the range? What is the mode? What is the median?
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3 What is the mean? The mean is the average. It is found by adding all the numbers in a set and dividing by the number of values. 10, 25, 20, 5, 20 The sum is 75. We added 5 numbers. Divide 75 by 5. The average or mean is 15.
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4 What is the Median? The median is the middle number when the data are listed in order. The number of raisins in our boxes: 10, 26, 26, 27, 30, 32, 32, 32, 34 x 30 is the median.
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5 What is the mode? The mode is the number or numbers that occur most often in the data. 10, 26, 26, 27, 30, 32, 32, 32, 34 The mode is 32.
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6 What is the range? The range is the difference between the greatest and the least number in the data. 10, 26, 26, 27, 30, 32, 32, 32, 34 The greatest number is 34. The least number is 10. 34 – 10 = 24. The range is 24.
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